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Canon RF 16mm F2.8 STM Assessment



Introduction

The Canon RF 16mm F2.8 STM is an inexpensive ultra-wide-angle prime lens for Canon EOS R full-frame mirrorless cameras that will not break the financial institution.

That is an especially compact and light-weight lens, but it nonetheless provides a vibrant most aperture of F2.8 for higher low-light efficiency and bokeh results.

It options 9 parts in 7 teams, together with one aspherical ingredient helps management distortion, and it has a Tremendous Spectra Coating to assist cut back flare and ghosting, plus a 7 blade diaphragm which creates a pretty blur to the out-of-focus areas of the picture.

An inside focusing mechanism means the lens barrel does not transfer, and it provides a formidable minimal focusing distance of 13cm / 5.1″ and a most magnification ratio of 0.26x, while utilizing price efficient 43mm filters.

Aimed predominantly at vloggers, astro and panorama photographers, the Canon RF 16mm F2.8 STM lens is out there now priced at £319 / $299 within the UK and the US, respectively.

Ease of Use

Canon RF 16mm F2.8 STM

Weighing in at 165g / 5.8 ounces and measuring 4cm in size, the RF 16mm F2.8 STM is a super-light, tiny ultra-wide-angle prime lens.

It is barely noticeable when used with a mid-sized digicam physique just like the Canon EOS R6 physique that we examined it with, as proven within the product photographs.

The lens barrel routinely extends by an extra 5mm when the digicam physique is turned on after which retracts again into the housing when the digicam is switched off.

Construct high quality is nice for such an inexpensive lens. Regardless of its largely plastic building, the RF 16mm F2.8 STM feels stable in your hand, and it commendably has a metallic mount.

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

Notice that this lens doesn’t have a weather-resistant design to assist shield it towards mud and moisture.

There’s additionally no optical picture stabilizer built-in to this lens, although arguably you do not really want this characteristic on such a small and light-weight wide-angle optic.

In the event you’re not utilizing the focusing ring for guide focusing, you’ll be able to change its operation to be the Lens Management Ring as a substitute through the devoted Focus/Management swap on the facet of the lens barrel.

On this Management setting, the ring can be utilized to manage sure key digicam settings (TV, AV, ISO and publicity settings) as a substitute of the focusing. Though not a brand new concept within the wider pictures world, this is among the first occasions that Canon have integrated this concept into their interchangeable lenses.

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

The Canon RF 16mm F2.8 STM lens has a reasonably slender fly-by-wire focus ring with a ridged grip band.

There aren’t any laborious stops at both ends of the vary, making it harder to set focus at infinity.

Notice that this lens usefully provides full-time guide focusing even when AF is chosen.

In use the guide focusing system emits an audible “whining” noise that makes it much less appropriate for video than stills.

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

Polariser customers needs to be happy that the wise 43mm filter thread does not rotate on focus.

In the case of auto-focusing, the RF 16mm F2.8 STM is a quick performer because of the STM motor, taking round 0.10 seconds to lock onto the topic when mounted on the Canon EOS R6 digicam that we examined it with.

We did not expertise very a lot “searching” in any respect, both in good or dangerous gentle, with the lens precisely focusing just about all the time, because of the excellent low-light capabilities of the EOS R cameras.

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

The STM motor can also be fairly quiet in AF mode, emitting a a lot quieter “whirr” than when manually focusing, which makes this lens well-suited to auto-focusing throughout video recording.

There’s a petal formed lens hood (EW-65C) and a mushy case (LP1014) accessible for this lens, however disappointingly each are non-obligatory extras that are not included within the field.

Canon RF 16mm F2.8 STM

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

Focal Vary

The Canon RF 16mm F2.8 STM’s focal size of 16mm supplies an angle of view of 108°10.

Canon RF 16mm F2.8 STM

Chromatic Aberrations

Chromatic aberrations, sometimes seen as blue or purple fringes alongside contrasty edges, weren’t particularly obvious in our check photographs, solely showing in very excessive distinction areas.

Canon RF 16mm F2.8 STM

Vignetting

When taking pictures JPEGs, with the lens set to its most aperture of f/2.8, there’s some apparent gentle fall-off within the corners, requiring you to cease down by at the least 2 f-stops to stop it.

There’s an enormous quantity of vignetting evident within the RAW recordsdata, although, with virtually pure black within the excessive corners – fortunately the Canon EOS R6 digicam routinely and efficiently applies corrections to the JPEG recordsdata, leading to a suitable out-of-camera picture.

Canon RF 16mm F2.8 STM

JPEG

Canon RF 16mm F2.8 STM

RAW

Distortion

There is a frankly unbelievable quantity of barrel distortion evident within the RAW recordsdata – fortunately the Canon EOS R6 digicam routinely and efficiently applies corrections to the JPEG recordsdata, leading to a suitable out-of-camera picture.

Notice that you simply can not really flip off distortion correction in an EOS R digicam physique when this lens is used – the menu possibility is definitely greyed out and unavailable – which supplies you a good suggestion of simply how a lot correction the digicam is making use of!

You will have to make use of Canon’s Digital Picture Skilled 4 software program to post-process the Uncooked recordsdata, at the least till Adobe releases an RF 16mm lens profile for Digicam Uncooked / Lightroom.

Canon RF 16mm F2.8 STM

JPEG

Canon RF 16mm F2.8 STM

RAW

Sunstars and Flare

The Canon RF 16mm F2.8 STM is able to creating some very good sunstars when stopped-down to f/22, as proven under, and flare can also be nicely managed even when taking pictures immediately into the solar.

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

Macro

The Canon RF 16mm F2.8 STM provides a really helpful minimal focusing distance of simply 13cm / 5.1″, with a most magnification of 0.26x.

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

Bokeh

Bokeh is a phrase used for the out-of-focus areas of {a photograph}, and is often described in qualitative phrases, resembling easy / creamy / harsh and many others.

Within the RF 16mm F2.8 STM lens, Canon have employed an iris diaphragm with 7 rounded blades, which has resulted in fairly good bokeh in our view for such a wide-angle lens.

We do realise, nevertheless, that bokeh analysis is subjective, so we have included numerous examples under in your perusal.

Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM
Canon RF 16mm F2.8 STM

Sharpness

To be able to present you the way sharp the Canon RF 16mm F2.8 STM lens is, we’re offering 100% crops on the next web page.

We will be happy to hear your thoughts

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